Pseudomonas putida
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas putida
(Trevisan 1889) Migula 1895.
Old synonyms:
Bacillus fluorescens putidus  Flugge 1886, Bacillus putidus  Trevisan 1889, Pseudomonas eisenbergi  Migula 1900,
Pseudomonas convex  Chester 1901, Pseudomonas incognita  Chester 1901, Pseudomonas ovalis  Chester 1901, Pseudomonas
rugosa
 (Wright 1895) Chester 1901, Pseudomonas striata  Chester 1901.
Subjective synonym:
Arthrobacter siderocapsulatus.
Gram negative, 0.7-1.1 / 2-4 μm, motile  rods with polar multitrichous flagella. Some
strains may have oval shape.
Cultures produce diffusible yellow to brown, green fluorescent pigment.
Strictly aerobic (except in media with nitrate), optimal temperature 25-30 ºC. No
growth at 41 ºC. Some strains grow at 4 ºC. Organic growth factors not required.
Grow on media: Trypticase Soy Agar  ± 5% sheep blood, Trypticase Soy Broth,
Mueller-Hinton agar.
Isolated from soil, water & clinical samples (rarely).
Saprophytic or opportunistic pathogen. Septicemia and septic arthritis in immunocompromised patients reported.
  1. Chun J., Rhee M.S., Han J.I. & Bae K.S.: Arthrobacter siderocapsulatus Dubinina and Zhdanov 1975AL is a later subjective
    synonym of Pseudomonas putida (Trevisan 1889) Migula 1895AL. Int. J. Syst. Evol. Microbiol., 2001, 51, 169-170.
  2. Elomari M., Coroloer L., Verhille S., Izard D. & Leclerc H.: Pseudomonas monteilii sp. nov., isolated from clinical specimens. Int. J.
    Syst. Bacteriol., 1997, 47, 846-852.
Can use more than 80 different carbon sources.
Cannot utilize trehalose, meso-inositol, geraniol.
Egg-yolk reaction, nitrates reduction, gelatin & starch hydrolysis  negative.
Arginine dihydrolase, oxidase, 2-Ketogluconate positive.
Can degrade aromatic compounds like benzene, toluene, ethylbenzenes, nitrotoluenes, chlorobenzenes, chlorophenols etc.
Phenotypically,
P. monteilii is almost similar to P. putida but can be differentiated by assimilation of inositol, tartrate, tryptamine,
D-mandelate, acetamide, D-xylose, mannitol & mucate.
(c) Costin Stoica
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